The automaker's move was expected, and comes after several hundred people at the facility were laid off earlier this year.

U.S. sales have slowed for all automakers this year -- notably in the category of passengers cars, as customers have preferred SUV and crossover models, as well as light trucks.
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The Detroit-Hamtramck plant builds Chevrolet Volt and Impala, Cadillac CT-6 and Buick LaCrosse vehicles.

In the first nine months of 2017, GM sold 15,634 LaCrosse models, a 21 percent drop from last year. Sales of the Volt fell 6 percent and Impala 31 percent, while sales of Cadillac's CT6 increased more than 50 percent.

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